<div class="doc-item" id="doc-888"><h2 class="doc-item-name">future-call<span class="namespace">(clojure.core)</span></h2><ul class="var-arglists"><li>(<span class="var-name">future-call</span>  f)</li></ul><div class="var-docstring"><p>Takes a function of no args and yields a future object that will
  invoke the function in another thread, and will cache the result and
  return it on all subsequent calls to deref/@. If the computation has
  not yet finished, calls to deref/@ will block.</p></div><div class="var-source"><pre>; clojure/core.clj:4021
(defn future-call 
  [#^Callable f]
  (let [fut (.submit clojure.lang.Agent/soloExecutor f)]
    (proxy [clojure.lang.IDeref java.util.concurrent.Future] []
      (deref [] (.get fut))
      (get ([] (.get fut))
           ([timeout unit] (.get fut timeout unit)))
      (isCancelled [] (.isCancelled fut))
      (isDone [] (.isDone fut))
      (cancel [interrupt?] (.cancel fut interrupt?)))))</pre></div><div class="license"><p>Copyright (c) Rich Hickey. All rights reserved.</p><p>The use and distribution terms for this software are covered by the <a href="http://opensource.org/licenses/eclipse-1.0.php">Eclipse Public License 1.0</a>, which can be found in the file
          epl-v10.html at the root of this distribution. By using this software
          in any fashion, you are agreeing to be bound by the terms of this
          license. You must not remove this notice, or any other, from this
          software.</p></div></div>